Interesting. Reading the Matrix chapter on personas, icons, devices, and PAN/WANs, I don't get the distinct impression that a devices ceases to be a device when a persona subsumes "the device's icon", however. It's grammar, I know, but it seems odd that when my street sam wants to use his implanted commlink with wireless enabled to provide an AR display and decides to also slave his smartgun to it for protection, he actually cannot do this.
Seems that these rules are either conflicting, or we're reading it too literally.
I think you're right, JackVII, getting three marks on a device and dumpshocking it's user seems a little brutal; though it'd take at least, what, two complex actions for that to happen(?), that's still mighty powerful, but I don't see way for the rules about PAN/WANs to coexist with the rules concerning Devices and Personas without either making deckers potentially very strong or severely screwing over the Master/Slave relationship. What, the solution is to carry two commlinks, one you use to access the matrix and another that just slaves all your gear?